Compare
#10 Western Sulphite side seam window envelope, 4-1/8 x 9-1/2 inches, 24 lb white sulphite, H window, box of 500

#10 Window Envelopes, Side Seam (4 1/8 x 9 1/2) 24lb White 500/Box (W3103)

Your Price: $24.50
(No reviews yet) Write a Review
Brand
WSE
SKU:
W3103
Availability:
3-Day Lead-Time
Envelope Type:
Window Envelopes
Size:
Number 10 (4-1/8 x 9-1/2)
Closure Type:
Gummed Seal
Color:
White
Window Type:
Single Window
Seam Style:
Two Side Seams
Paper Type:
Western Sulphite (White Wove)
Brightness:
92% Brightness
Adding to cart… The item has been added
Add to Wish List

These #10 Western Sulphite® side seam window envelopes measure 4-1/8" x 9-1/2" and are made from 24 lb white sulphite paper with a professional vellum finish. Designed for invoices, statements, checks, billing notices, business correspondence, and daily office mailings, these commercial window envelopes feature a poly “H” window for clear address visibility.

Key Product Details

  • Envelope Style: #10 side seam commercial window envelope
  • Size: 4-1/8" x 9-1/2"
  • Color: White
  • Material: 24 lb white sulphite paper
  • Finish: Vellum finish with 92% brightness
  • Window: Poly “H” window
  • Window Size: 1-3/8" x 4-1/2"
  • Window Position: 7/8" from left, 5/8" from bottom
  • Seal: Traditional remoistening seal
  • Seams: Two side seams under
  • Flap: Flap down
  • Certification: SFI Certified
  • Quantity: 500 envelopes per box
  • Manufacturer Item Number: 3103

#10 Side Seam Window Envelopes for Business Mailings

Western Sulphite® #10 side seam window envelopes are a dependable choice for offices, accounting departments, billing departments, medical offices, legal firms, schools, municipalities, and other organizations that send professional window mail. The 4-1/8" x 9-1/2" size is a standard business envelope format for mailing letter-size documents folded into thirds.

Each envelope is manufactured with two side seams under, a poly window, a flap-down closure, and a traditional remoistening seal. The “H” window is positioned for address visibility, helping streamline mailing preparation when documents are printed with the address already aligned.

Printer Compatibility Note: Not recommended for laser printing. Heat from laser printers may cause the poly window to shrink, warp, or distort.

Item Number 3103 / W3103
Envelope Size 4-1/8" x 9-1/2"
Paper / Material 24 lb white sulphite paper
Color / Finish White, vellum finish, 92% brightness
Window Details Poly “H” window, 1-3/8" x 4-1/2", positioned 7/8" from left and 5/8" from bottom
Envelope Style #10 side seam commercial window envelope
Seal / Construction Remoistening seal, two side seams under, flap down
Certification SFI Certified
Quantity 500 envelopes per box / 2,500 per carton

Need custom printed envelopes? Advanced Filing Concepts can help businesses order stock envelopes with custom printing for professional branded mailings.

!